Regulating device for pile-driver monkeys



Jan. 1, 194s.'

P. PFE |FFER REGULATING DEVCE FOR PILE-DRIVER MONKEYS Filed Sept. 23, 1940 Patented Jan. l, 1946 4aetnanet DEVICE Fon PmnsitIvR-f MoNKEYs Raul Pfeiffen, Hamburg-Altona; Germany g vested.

. in themien.Ii-operty.Custodian.

3 Claims..

Regulating devices for pile-drivermonkeysi; in

the regulating piston .must be. Correspor'idinglyl developed as a three=part piston and all other channels adapted to that irgure. Thatis, eX'.- tremely Y awkward for the 'manufacture'. and for the operation,v andY no' satfsfactoryiprectical; solution has been found".V

Here thel present invention Vcornes whicn, quite apart' from being easieito produce', Yis also simpler inl its operation..

In this invention a iegula'ting` device forstearn monkeys is provided', in which. .within tneholow. piston rod oft'lie working pistou, there'i a. regu,- latihg piston', Wlth a larger' piston 'albv'fdlf the regulating piston and a.. smaller adjusting* piston below'to regulate the inlet andi outlet; steam for" the worki'rgipiston., Theregmatinfp regulates. the driving; mediumv for.. tuev working piston and the latter' regulates. the dfvngjnifdiumfQr-tnej reg'juiating; pistemso that. trie4 monkey can strike' automatically. In. ordeiito. attain this end the'uppeit i"e-igul'atingg' piston and'N thew'rkng ar'. connected by. channels...

On the; crossiiead Vof the. pistdnrod tne'reis. ,a

steam. distributor with which single sttokesand also. s'triokeswitri .a smaller drop, can be. given.

effected by the, steam distributor and. by using fa.

weight, Fig. 5.

In one construction .given as an. e'iiramole-the` invention is shown inthe annexed drawing:

Fig.` 1 shows the monkeywith thestriket in its lowest position,4 where it. stands on the. pile.. Fig". 2 show sthemonkey atthecommencemeut of. reversing from. lifting to dropping.V`

Fig. @shows tne monkey in .itsnignesttositien snortty-beferefeversing forltnedrop. 'the keyer'eaenes this position by expansin-*ef the steamand binertia 'niet shows aparaat section; morder temine-v` towads'the left'.v

Fig, .fi-shows; a iptutuu section toriiidietethe; wg'htiiigfof the st'eairi: distributor 9 verth cranked-'lever' -s'with weight 1:1.. lj

Fig. @snows .an enlarged representation/or vthe steam distributor '9 in section inits detailsi'ri one special construction. Fig'. '1"y isa horizontal section onen, enlarged: scale. taken throuigliV the, r'iionkeyand the. working` "piston of Figure 5- onln'e Kel-'X1 The steam. passes through the steam inlet; con nection-S "into thefhollow piston rod |-2 and. the. space between the' upper an'dlowerf regula@- ingipisten l2; Fromthefees shown in 1.=ig..1,..l je steam Vcan Aps ts's''through the" channel 'Sfintlie piston rod t2V intothe cl'ntnnel 1 in. the. wan". et thecynnder r and. frontiere: tnrau'ghLgsuitaui-e.

annular depressions in Ythe:vitKieleri l] itoi chem-m1 vt and. nana through the' D of ,the .slide verve-eintathe cylinder space mover theuppef regulating piston. The regmatfngiiiten 21s moved from .its upperjp'ositionf, shown iiiK Fi... f2? intc tHe-position indicatedi. Fgf... I tlfie'rlzlyj the lowert regulatin'gv piston" pl'tS'SfS`` .heydthe' .slot 1.1,. seth/at the. steam. can. nass .fr-ani the. ring?, sliacotlie. IZ thiougl'tli' slotlll l by stearn7 pressureinto'v theu position as; shown in Fig;l 2,. 'I'.l'fie. Steam .cannow pass. outfrorn the; cyunde': spate L' tn jreugn .the $10.1; tlintp., the. cylind'i space. .3f andjrom. thereathroughthe exe. haut. .ofer`1ir-gf`A ,4v infor .therpen ain` '12h e11.11o'n-lxey-` [3f ijis'es. to'tleositinof Figsrpluetto itslnert: andlmli'er'i. drosfdowrien the headof the pile; (Eos'ituligl 11.) Through thechannelsr-il and. the steam can now'agaln pass.L from therme-space over the lower egulatingplstorw .intathe'spacef I 0 over the r upper. regulating piston at andT press down the. latter,L whereupon .the monkey againf begil'x'is"` tense.: AtA thelcornmencernent @ot the r'amin-ing'f. worlgitls necessary tegiveshorustrokesf; as the y pile still draws: st srongly` isf thepuit' posenfthesteam distributor. When-.the mom-` f' isten'ti'irouel the channels ing through channel 1 can pass out into the open` air again through the channels23 and |76. Itv is; y therefore possible also to give single strokes of any desired drop.

For trying out new monkeys at the works it is necessary, for the purpose of running in the pisa ton and the regulating piston, to let the monkeyVA l dance, i. e., the monkey is not allowed to drop right to the bottom, but reversed sooner, so that steam enters the cylinder space I and catches up the falling monkey, because otherwise any stop would soon beY smasheldbythe heavy monkey. This running in is done at the worksand isalso necessary in many cases of repair. For that purpose the regulating 'piston 9 (Fig, 5) is weighted at its cranked lever I8 by a weight I'l. This weight is caught up by a stop .by a bearing I9 attached to the monkey. Through a screwedjoint the channel IB is now connected tothe channel 20 (Fig. 5). If the monkey I3 is down the steam distributor 9 is held to the left by the weight 'I'I and connects the channel 20, Awhich' opens into the steam inlet pipe 5, with the channel I6. The

steam can pass out of this channel* I6 throughl the D of the steam distributor 9 into the space I0 Aover the regulating piston 2, pressing down the latter so that the'steam can pass into ,thev cylinder space I, causing the monkey toy rise.

When the monkey has been lifted a little the steam distributor moves to the right, becausethe weight'is lifted by the bearing I9 and the spring 22 relaxes, and connects through its D the space IIIv with an exhaust opening I4 (Fig. 2), by which. means the regulating piston 2 isagain reversed' been reached, whereby the regulating piston 2` is again directed downward and the steamvc'afn enter the space I to catch up the falling monkey.Y

TheA connection 24 between I8 and I9 is inthe.

form of 'a'wire rope or a chain', because it must move aside; for the rising monkey reduces the distance between I8 andvl 9.

Thersteam distributor 9 (Fig. 6)v consists of two h'alfcylinders 26 and 2'I,A the lower one 21 of which'carries the D for the connecting of the steam channels, the upper half serving to press down `the lower half against the steam pressure. This is eiected as followsz-The slide valve rod presses apart the two halves of the steam distributor with its cone l2| lthrough the'acton of theY spring 22 which lays itself against the casing of the steam distributor and 'so presses the two halves of the distributor apart with the help of the cone, whilerat the same time the spring 22 causes the return movement ofthe steam distrbutor when the latter has been moved to the left by pulling the rope I5.

l In Fig. 6 the part 9 of Figs. 1 to 5 is represented more in detail in a somewhat clearer Vseparate drawing, i. e., the steam distributor 9 of Figs. l to 5 is developed in accordance with Fig'. 6. The essential point of the application is that vby the regulating piston 2 within the piston rod I2 al1 harmful space is avoided, the ring space I9 Fig. 3 in the hollow piston rod being always under steam pressure below the upper regulating piston, and further the connection for the steam over the channel 8, 28 to the steam distributor 9 and, according to the position of the latter, to the channel 23V and the space I0 being given through the openingsA I I conjointly with the' ring channel l. In this way the steam is enabled to strike the upper regulating piston from above, whereby it is led through the working piston 29.

'Y The distance to which the monkey can rise is in this invention adjustable to any desired height by several exhaust openings I4, Ida and Mb in the monkey, whereby, as indicated in the drawings, those exhaust openings that are not required mayeitherbe open or closed. In the former case the lowest opening, which is reached rst by the working piston 29 would determine the height th'e monkey would rise.

What I claim is: Y

l. In a steam` actuated vpile driver,a monkey having a bore therein and provided with an exhaust opening at the lower end of the bore, a head on the upper end of said monkey, a piston tting Vin said bore, a tubular piston rod xed to said piston and extending through said head, said piston rod opening into the space below the piston 'and having lateral ports opening into the space above said piston, a steam inlet opening into the piston rod adjacent its upper end, a regulator piston in said piston rod and movable between'a position above said ports and a position below said ports, and actuating means to actuate said regulator piston, said actuating means including a cylinder at the upper end of the piston rod above the steam inlet and having a greater internal diameter than the internal diameter of the piston rod, a regulatoroperating piston tting in the last mentioned cylinder, and a rod connecting the last mentioned piston and the regulator piston whereby steam pressure in the tubular piston rod urges the `regulator piston upwardly.

2. In a steam actuated pile driver, a monkey having a bore therein and provided with an exhaust opening at the lower end of the bore, a head on the upper end of said monkey, a piston tting Y in said bore, a tubular piston rod xed to said piston and extending through said head, said pistonrod opening into the space below the piston and having'lateral ports opening into the space above said piston, a steam inlet opening into the piston rod adjacent its upper end, a regulator piston in said' piston rod and movable between a position above said ports and a position below said ports, and actuating means to actuate said regulator piston, said actuating means including a cylinder at the upper end of the piston rod above the steam inlet and having a. greater internal diameter thanpthe internal diameter of the piston rod, a regulator operating piston tting in the last mentioned cylinder, a rod connectingthe last mentioned piston and the regulator piston whereby steam pressure in the tubular pston rod urges the regulator piston upwardly, and means to admit steam under pressure above the regulatorV operating piston upon the monkey being in dropped position and exhaust steam from above the regulator operating piston upon the monkey'being partially raised.V Y

3. In a steam actuated pile driver, a monkey having a bore thereinand provided with an exhead on theupper end of said monkey, a pistontting in said bore, a tubular piston rod xed to said piston and extending through said head, said piston rod opening into the space below the piston and having lateral ports opening into the space above said piston, a steam inlet opening into the piston rod adjacent its upper end, a regulator piston in said piston rod and movable between a position above said ports and a position below said ports, and actuating means to actuate said regulator piston, said actuating means including a cylinder at the upper end of the piston rod above the steam inlet and having a greater internal diameter than the internal diameter of the piston rod, a regulator operating piston fitting in the last mentioned cylinder, a rod connecting the last mentioned piston and the regulator piston whereby steam pressure in the tubular piston rod urges the regulator piston upwardly, means to admit steam under pressure above the regulator operating piston upon the monkey being in dropped position and exhaust steam from above the regulator operating piston upon the monkey being partially raised, a valve chamber at the upper end of the piston rod and having port communication with the atmosphere, and a valve in said chamber controlling the last mentioned means and movable to a position for exhausting steam from the piston to the atmosphere.

PAUL PFEIFFER. 

